Geothermal Power Plants In the US

The Largest Geothermal Power Plants in the US

PlantCity/CountyStatePrimary Fuel TypeMWh GeneratedCO2 EmissionsRank EmissionsCO2 Emissions/MWhRant Emissions/MWhClosing Date
Calistoga Power PlantCalpine (100.00%)
Lake County CA Geothermal467,641MWh↓11
Geysers Unit 5-20Calpine (100.00%)
Sonoma County CA Geothermal4,390,209MWh↓11
John L. Featherstone PlantHudson Ranch Power I LLC (100.00%)
Imperial County CA Geothermal437,381MWh↑11
McGinness Hills 3Ormat Nevada Inc (100.00%)
Lander County NV Geothermal436,528MWh↓11
Sonoma County CA Geothermal402,619MWh↑11
Coso Finance PartnersCoso Operating Co LLC (100.00%)
Inyo County CA Geothermal381,524MWh↓11
Coso Power DevelopersCoso Operating Co LLC (100.00%)
Inyo County CA Geothermal305,200MWh↓11
Sonoma County CA Geothermal303,903MWh↑11
Dixie ValleyOrmat Nevada Inc (100.00%)
Churchill County NV Geothermal295,952MWh↓11
Tungsten MountainTungsten Mountain (100.00%)
Churchill County NV Geothermal294,648MWh↓11
Lightning Dock Geothermal HI-01, LLCLightning Dock Geothermal HI-01, LLC (100.00%)
Cotton City CDP NM Geothermal27,522MWh↓11
North ValleyNorth Valley (100.00%)
Churchill County NV Geothermal207,262MWh↓11
Soda Lake 3AMOR IX, LLC (100.00%)
Churchill County NV Geothermal123,241MWh↑11
King Manalo
Last Reviewed By: King Manalo
Published: 2025-07-29